RU2589570C2 - Textile product with heating plate and method of making same - Google Patents

Abstract

FIELD: heating; textile and paper.

SUBSTANCE: according to explanatory version of the invention textile product includes external coating and inner coating. Textile product includes at least one heating strip located on inner or outer coating, which wire part is electrically connected to end of heating pad, and first adhesive tape, wrapping heating pad end whereto conducting part is connected.

EFFECT: disclosed is textile product with heating pad, which can be made with possibility of control and washing, and method of textile product making.

13 cl, 11 dwg

Description

[0001] This application has priority to Korean Patent Application No. 10-2014-0078413, filed June 25, 2014, the disclosure of which is incorporated herein by reference in its entirety.

BACKGROUND

1. The technical field

[0002] Illustrative embodiments of the invention relate to a textile product with a heating pad and a method for manufacturing a textile product.

[0003] More specifically, explanatory embodiments of the invention relate to a textile product with a heating pad that is washable and has a heating temperature adjustment, and a method for manufacturing a textile product.

2. Description of the Related Art

[0004] Textiles have various shapes and physical properties. A textile product made from various types of textiles may include yarn, fabric, non-woven materials, pillows, quilts, sleeping bags, clothes, and so on.

[0005] Recently, textile products have been developed that have a specific function to add value. For example, pillows, quilts, sleeping bags, and clothes having a heating function may be designed.

[0006] For example, traditional winter clothing is made of thick and expensive material to maintain body temperature and protect against cold wind outside. Traditional winter clothing may include an insulating element inside the clothing, and the clothing may be formed by chemically treated coated paper sheets to protect against cold winds. However, winter clothing formed in this way has a large weight and volume. Thus, traditional winter clothing may be inconvenient due to the large weight and volume, and the warming characteristics of traditional winter clothing may be deteriorated.

[0007] On the other hand, winter clothing having a heating pad has been developed to compensate for these deficiencies. The heating pad includes heating material electrically connected by a connector to a battery to generate heat.

[0008] However, the heating pad of traditional winter clothing is generally attached to the inner surface of the lining and fixed with a stitch to the fabric.

[0009] In traditional winter clothes, heat is directly transferred from a specific place on the lining, so that a user may be burned. In addition, in the event of snow or rainy weather or during washing, water can penetrate through the stitching to the heating pad. Thus, the durability of the heating pad may be impaired.

[0010] In addition, winter clothing has been developed having a pocket for a heating pad. However, winter clothing having a pocket also has a problem with uneven heat transfer and water penetration. In addition, it may be necessary for the user to remove the heating pad before washing the clothes, which may cause inconvenience and damage to the clothes.

[0011] [Previous Patent Documents]

(Patent Document 1) KR20-0199828 Y1 (2000.8.4)

(Patent Document 2) US20130228562 A1 (2013.9.5)

SUMMARY OF THE INVENTION

[0012] One or more illustrative embodiments of the invention provide a textile product with a heating pad that can be firmly attached to the textile product, and a method for manufacturing a textile product.

[0013] One or more illustrative embodiments of the invention also provides a textile product that can prevent water from seeping between the outer or inner coating and the heating pad, and a method for manufacturing a textile product.

[0014] According to an explanatory embodiment of the invention, the textile product includes an outer coating and an inner coating. The textile product includes at least one heating pad located on the inner or outer coating, a wire portion electrically connected to the end of the heating pad, and a first adhesive tape wrapping the end of the heating pad to which the wire portion is connected.

[0015] In an explanatory embodiment, the textile product may further include a second adhesive tape wrapping the opposite end of the heating pad.

[0016] In an explanatory embodiment, the wire portion may include a contact portion extending through the end of the heating pad, a curved portion curved at the end of the heating pad, an elongated portion extending from the curved portion, and a third adhesive tape wrapping the upper and lower sides curved section.

[0017] In an explanatory embodiment, the third adhesive tape may be attached to the inner or outer coating using hot melt adhesive.

[0018] In an explanatory embodiment, the textile product may further include a fourth adhesive tape for wrapping the upper and lower sides of the elongated portion, the fourth adhesive tape being attached to a portion of the elongated portion.

[0019] In an explanatory embodiment, the fourth adhesive tape may be attached to the inner coating or the inner surface of the outer coating using hot melt adhesive.

[0020] In an explanatory embodiment, the textile product may further include a waterproof sheet covering the heating pad and the elongated portion. The waterproof sheet can be attached to the heating pad by thermocompression welding.

[0021] In an explanatory embodiment, hot melt adhesive may be located between the waterproof sheet and the first to fourth adhesive tapes.

[0022] According to an explanatory embodiment of the invention, a method of manufacturing a textile product having an outer coating and an inner coating includes (a) providing at least one heating pad and a wire portion electrically connected to the end of the heating pad, (b) arranging the heating overlays on the surface of the internal or external coating, (c) finishing by wrapping the adhesive tape around the end of the heating lining at the place where the wire is attached, (d) wrapping the hell adhesive tape on the portion of the wire portion that extends outward of the heating pad and attaching the adhesive strip to the surface of the inner or outer coating using hot melt adhesive, and (e) attaching the waterproof sheet covering the heating pad and the portion of the wire portion to the heating pad by thermocompression welding to protect against water leakage.

[0023] In an illustrative embodiment, (c) may include (c-1) wrapping the end of the heating pad at the location where the connection to the wire portion is, the first adhesive tape, (c-2) wrapping the opposite end of the heating pad of the second adhesive tape.

[0024] In an explanatory embodiment, (d) may include wrapping a curved portion of the wire portion that is curved at the end of the heating pad with a third adhesive tape, and wrapping a portion of the stretched portion of the wire portion extending from the curved portion with a fourth adhesive tape. The third adhesive tape and the fourth adhesive tape can be attached to the surface of the inner or outer coating using hot melt adhesive.

[0025] In an explanatory embodiment, (d) may include (d-1) applying a hot melt adhesive to the inner or outer coating at a location corresponding to the curved portion, placing a third to first adhesive tape between the curved portion and the hot melt adhesive, and attaching the third- a second adhesive tape to a third-first adhesive tape for wrapping a curved portion, and (d-2) applying hot-melt adhesive to the inner or outer coating at a location corresponding to a portion of the stretched portion, placing a fourth-first adhesive tape between the stretched th portion and melting, and attaching a second fourth-adhesive tape to the fourth to the first adhesive tape for wrapping elongate section portion.

[0026] In an illustrative embodiment, (e) may include (e-1) attaching first to fourth adhesive tapes and a waterproof sheet using hot melt adhesive, and (e-2) attaching the waterproof sheet to an inner or outer coating using thermocompression welding.

[0027] According to the present invention, the heating pad is attached to the inner or outer coating with a high density using a waterproof sheet so that the clothes can be waterproof. Thus, the clothes according to the present invention can be easily washed in comparison with traditional clothes.

[0028] Furthermore, the clothes of the present invention may have improved water resistance and improved warming characteristics.

[0029] Furthermore, according to the textile product and the manufacturing method of the textile product, at least one surface of the inner and outer coating is coated so that heat can be evenly distributed.

[0030] Furthermore, according to the textile product and the manufacturing method of the textile product, the heating pad is located between the inner coating and the outer coating, so that the appearance of the clothes is not changed.

BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The above and other features of the invention will become more apparent through a detailed description of its explanatory embodiments with reference to the accompanying drawings, in which:

FIG. 1 is a view briefly showing clothes having a heating pad according to an embodiment of the invention;

FIG. 2 is a photograph depicting a heating pad of FIG. one;

FIG. 3 is a perspective view showing a portion of a power supply according to an embodiment of the invention;

FIG. 4-11 are views briefly illustrating a method for manufacturing clothes having a heating pad according to an embodiment of the invention;

DETAILED DESCRIPTION

[0036] The present invention is described more fully hereinafter with reference to the accompanying drawings, in which explanatory embodiments of the present invention are shown. However, the present invention can be implemented in many different forms and is not limited to the explanatory embodiments set forth herein. More specifically, these embodiments are provided so that this description is complete and comprehensive and fully reflects the scope of the present invention to those skilled in the art. Like numbers refer to like elements throughout the document.

[0037] Furthermore, although the explanatory embodiments described below describe clothing as a textile product, the invention is not limited to the particular disclosed explanatory embodiments. For example, the invention can be applied to any type of textile product, such as a pillow, sleeping bag, blanket, and so on, to which a heating function can be added.

[0039] Embodiment

FIG. 1 is a view briefly depicting clothing having a heating pad according to an embodiment of the invention.

[0041] Referring to FIG. 1, clothing having a heating pad includes an outer cover 100, an inner cover 200, a heating pad 300, a waterproof sheet 400, and a wire portion 500.

[0042] A portion of the heating pad 300 that is electrically connected to the wire portion 500 and a portion of the wire portion 500 are wrapped with adhesive tape 710-740. Adhesive tape 710-740 is attached to the outer surface of the inner coating 200 using hot melt adhesive 800. The heating pad 300 and the portion of the wire portion 500 are coated with a waterproof sheet 400.

[0043] The outer cover 100 forms the outer surface of the clothes when the user wears clothes having a heating pad according to an embodiment of the invention. The outer cover 100 may have a shape similar to that of the upper body or lower body of the user. The outer surface of the outer cover 100 may be in contact with ambient air and particles. Thus, the outer surface of the outer cover 100 may have a waterproof coating. In addition, the outer cover 100 may be made of waterproof fabric.

[0044] Teflon resin (not shown) can be applied to the inner surface of the outer coating 100 to prevent heat loss between the outer coating 100 and the inner coating 200. In addition, Teflon resin can distribute heat from the heating pad 300 so that the user can feel warm throughout clothing. Teflon resin may cover the entire inner surface of the outer cover 100. Teflon resin may have a waterproof function, as well as the waterproof outer surface of the outer cover 100. Thus, clothing having a heating pad according to an embodiment may have a double waterproof function by the inner surface and the outer the surface of the outer coating 100.

[0045] The inner coating 200 has a shape corresponding to the outer coating 100, and the border of the inner coating 200 is combined with the outer coating 100 by crosslinking and so on, so that a tight surface is formed between the inner coating 200 and the outer coating 100.

[0046] The inner cover 200 may be in direct contact with the user's body when the user wears clothes having a heating pad according to an embodiment of the invention, and the inner cover 200 may be made of waterproof fabric.

[0047] Teflon resin (not shown) can cover the outer surface of the inner coating 200 similarly to the outer coating 100. The outer surface of the inner coating 200 is facing the inner surface of the outer coating 100. Teflon resin can eliminate heat loss and can distribute heat from the heating pad 300 so so that the user can feel the warmth of all clothing.

FIG. 2 is a photograph depicting a heating pad of FIG. one.

[0049] The heating pad 300 is located in the inner space, which is formed by the outer cover 100 and the inner cover 200, and generates heat by means of electrical energy to warm the wearer who wears the clothes.

[0050] The heating pad 300 may be a surface heater having a plurality of heating fibers spaced transversely to each other. The heating fibers of the heating pad 300 are electrically connected to each other so that the heating fibers can generate heat when electrical energy is supplied to them.

[0051] Thus, the heating pad 300 according to an embodiment of the invention can be protected from being disconnected even when the heating pad 300 is folded. Therefore, the heating pad 300 can perform a stable heating function. In addition, the heating pad 300 may be included in a textile product, such as a clothes [sleeping] bag or pillow. In addition, both surfaces of the heating pad 300 can preferably be coated with a waterproof material.

[0052] For example, the bioceramic powder can be applied to the heating fabric of the heating pad 300. The bioceramic powder can be formed by mixing tourmaline, Guemgangyakdol (mineral substrate), muscovite, germanium in a specific ratio. For example, a bioceramic powder may include 33 ~ 40 weight% Guemgangyakdol, 27 ~ 32 weight% Tourmaline, 15-17 weight% Muscovite, 18 ~ 25 weight% Germany. Each material can be formed by mixing them by grinding after cleaning with water, and then the ground powder is applied to the heating fabric so that the heating fabric can be coated with bioceramic powder.

[0053] The heating pad 300, including the heating tissue, emits radiation from the bioceramics in the far infrared region of the spectrum to improve blood circulation, biological activity and relieve user fatigue.

[0054] In addition, as a constituent of bioceramics, Guemgangyakdol includes rare elements such as silicon oxide, lithium, selenium and niobium and more than 20 organic materials, Guemgangyakdol has a good effect on rejuvenation, relieving fatigue, diabetes, skin diseases and digestive the system.

[0055] Germanium is one of the elements of the carbon subgroup. The germanium ion (external electron) can improve the viability of the human body and can be removed from the human body with various harmful substances. Thus, there is no poisoning or side effect. Well known is the purification of blood by germanium. The beneficial effects on lung cancer, neurosis, asthma, diabetes, high blood pressure, renal failure, and nervousness are also well known.

[0056] Tourmaline and muscovite are known as constituent elements of bioceramics, which emit radiation in the far infrared region of the spectrum, and themselves emit most of the radiation in the far infrared region of the spectrum.

[0057] The end of the heating pad 300 is electrically connected to the wire portion 500 to be considered. For example, the end of the wire portion 500 may be stripped, and then the core of the wire portion 500 may be electrically connected to the heating cloth of the end of the heating pad 300.

[0058] The end of the heating pad 300 at the point where the wire portion 500 is attached can preferably be wrapped with a first adhesive tape 710 for decoration. The first adhesive tape 710 may be an insulating rubber adhesive tape. The first adhesive tape 710 isolates the end of the heating pad 300 and the wire portion 500 by wrapping them and finishes to conceal the contact portion 510. In addition, the opposite end of the heating pad 300 may be wrapped with a second adhesive tape 720 for decoration.

[0059] The waterproof sheet 400 covers the entire portion of the heating pad 300 and the portion of the wire portion 500 including the end of the wire portion 500. The waterproof sheet 400 can be attached to the inner cover 200 by thermo-compression welding. Thus, the heating pad 300 and the wire portion 500 can be fixed by the waterproof sheet 400. The waterproof sheet 400 is attached along the outer border of the heating pad 300 so that the gap between the heating pad 300 and the inner coating 200 can be sealed by the waterproof sheet 400. Thus, water leakage through the gap can be prevented.

[0060] The waterproof sheet 400 can be attached to the inner cover 200 to fix the heating pad 300 to the outer surface of the inner coating 200. As another example, the waterproof sheet 400 can be attached to the outer cover 100 to fix the heating pad 300 to the inner surface of the inner cover 200 100. When the heating pad 300 is located near the outer cover 100, the gap between the heating pad 300 and the outer cover 200 can be sealed with a waterproof sheet 400. Thus, the flow of water through the gap can be prevented.

[0061] Note that the waterproof sheet 400 may be thermocompressively bonded to the outer cover 100 or the inner cover 200 using a high-temperature automatic press machine. Both surfaces of the heating pad 300 are waterproof coated, the waterproof sheet 400 covers the heating pad 300 and is attached with a high density so that the clothes can maintain the heating function despite being washed in water.

[0062] Furthermore, the end of the wire portion 500 is electrically connected to the heating pad 300, as described above, and the opposite end of the wire portion 500 can pass through the inner coating 200 or the outer cover 100 so that the opposite end of the wire portion 500 can be extended to the portion 600 power supplies in a pocket (not shown) of the inner cover 200 or the outer cover 100. The wire portion 500 transfers electricity from the power supply portion 600 to the heating pad 300. The wire portion 500 may be electrically normal wire for use in electric heating.

[0063] The wire portion 500 includes a curved portion 520 extending from the end of the heating pad 300 to the outside of the heating pad 300 and curved in a predetermined direction (eg, toward the pocket), and an elongated portion 530 extending from the curved portion 520.

[0064] When the user wears clothes, the curved section 520 and part of the elongated section 530 can preferably be attached to the outer surface of the inner cover 200 with hot melt adhesive 800 to prevent the wire portion 500 from moving. According to an embodiment, the third adhesive tape 730 is attached to wrap the curved section 520, and the third adhesive tape 730 is attached to the inner coating 200 by hot melt adhesive 800. In addition, the fourth adhesive tape 740 is attached to the inner coating 200 for wrapping side of the elongated section 530 using hot melt adhesive 800.

[0065] The first to fourth adhesive tapes 710-740 can preferably be attached to the surface of the waterproof sheet 400 with hot melt adhesive 800 for firmly fixing between the inner coating 200 and the waterproof sheet 400 when the waterproof sheet 400 is thermocompressively bonded.

FIG. 3 is a perspective view showing a portion of a power supply according to an embodiment of the invention.

[0067] The power supply part 600 supplies energy to the heating pad 300 so that the heating pad 300 can generate heat. The power supply portion 600 may be located in the pocket of the inner cover 200 or the outer cover 100. The opposite side of the wire portion 500 may be connected to the power supply portion 600. The power supply portion 600 may include a controller (not shown) for controlling energy supplied to the wire portion 500. The controller may be controlled by a button 610 formed on the outer surface of the power supply portion 600. Thus, the heating pad 300 can be adjusted to the desired temperature by using the button 610 of the power supply part 600.

FIG. 4-11 are views briefly depicting a method of manufacturing clothes having a heating pad according to an embodiment of the invention. Next, a method of manufacturing clothes having a heating pad according to an embodiment will be described in FIG. 4-11. An example embodiment with a heating pad 300 that is attached to the dorsal portion of the inner cover 200 is described in FIG. 4-11. After that, other sections of the inner coating 200 corresponding to the sleeve and so on can be sewn. In addition, an inner cover 200 may be formed having a final shape corresponding to the back and sleeve, and then the heating pad 300 may be attached to the outer surface of the inner cover 200.

[0069] First, as described in FIG. 4, a plurality of heating plates 300 are located on the outer surface of the inner cover 200. The wire portion 500 can extend through the heating plates 300 and be electrically connected to each heating plate 300 at the end of the heating plate 300.

[0070] And then, as described in FIG. 5, the end of the heating pad 300 at the point where the wire portion 500 is attached is wrapped with a first adhesive tape 710 for insulation and decoration. The first adhesive tape 710 may be a rubber adhesive tape. The opposite end of the heating pad 300 may be wrapped with a second adhesive tape 720 for decoration.

[0071] The wire portion 500 extends a plurality of heating plates 300 in order. The wire portion 500 is bent at a predetermined angle at the outermost end of the heating pad 300 so that the end of the wire portion 500 is directed toward the power supply portion 600, as described in FIG. 6. And then, hot melt adhesive 800 is applied to the outer surface of the wire portion 500, which corresponds to the bent portion 520 of the wire portion 500. And then, a third to first adhesive tape 731 is attached between the hot glue 800 and the bent portion 520.

[0072] Referring to FIG. 7, a third-second adhesive tape 732 is attached to the third-first adhesive tape 731. The curved portion 520 is surrounded by a third adhesive tape 730 including a third-first adhesive tape 731 and a third-second adhesive tape 732. The third adhesive tape 730 is attached to the inner hot melt adhesive 800. Thus, the curved portion 520 can be firmly fixed.

[0073] In addition, a portion of the elongated portion 530 is wrapped with a fourth adhesive tape 740, and a fourth adhesive tape 740 is attached to the inner coating 200 by hot melt adhesive 800 to prevent the wire portion 500 from moving as described in FIG. 8 and 9. Hot melt adhesive 800 is attached to a portion of the outer surface of the inner coating 200, which corresponds to a portion of the elongated portion 530, as described in FIG. 8. And then, the fourth-first adhesive tape 741 is attached using hot melt adhesive 800. And then, the fourth-second adhesive tape 742 is attached to the fourth-first adhesive tape 741.

[0074] And then, a waterproof sheet 400 is disposed to cover the entire portion of the heating pad 300 and the fourth adhesive tape 740, as described in FIG. 10. The first to fourth adhesive tapes 710-740 are attached to the surface of the waterproof sheet 400 with hot melt adhesive 800. Thus, the first to fourth adhesive tapes 710-740 can be firmly fixed between the inner coating 200 and the waterproof sheet 400. Waterproof sheet 400 attaches with high density to the outer surface of the inner coating 200 using a high-temperature automatic press machine.

[0075] After that, as shown in FIG. 11, the heating pad 300 and the wire portion 500 are firmly fixed to the outer surface of the inner cover 200. Many of the heating pad 300 are covered by a waterproof sheet 400 that is attached to the inner cover 200 so that water cannot flow between the inner cover 200 and the heating pad 300.

[0076] And then, the final shape of the inner cover 200 is formed by sewing on another part of the inner cover 200, and then the inner cover 200 is stitched with the inner surface of the outer cover 100 so that the clothes having a heating pad in FIG. 1, could be formed.

[0077] The foregoing is an explanation of the invention and does not limit it. Although several illustrative embodiments of the invention have been described, it will be apparent to those skilled in the art that many modifications of the explanatory embodiments are possible without substantially departing from the new idea and advantages of the invention. Accordingly, all such modifications are to be included in the scope of the invention as defined in the claims. In the claims, the sentences “means plus function” are intended to encompass the structures described herein that perform the described function, and not only structural equivalents, but also equivalent structures. Therefore, it is clear that the foregoing is an explanation of the invention and is not limited to the specific disclosed explanatory embodiments, and that modifications of the disclosed explanatory embodiments, as well as other explanatory embodiments, are to be included in the scope of the attached claims. The invention is defined by the following claims, the equivalents of the claims to be included in them.

Claims (13)

1. A textile product having an outer coating and an inner coating, the textile product comprising:
at least one heating pad located on the inner or outer coating; a wire portion electrically connected to the end of the heating pad; and a first adhesive tape wrapping the end of the heating pad at the point of attachment of the wire portion, and
a waterproof sheet attached to the inner coating or the outer coating by thermocompression welding to cover the entire heating pad and the portion of the wire portion, wherein
a waterproof sheet is attached along the outer border of the heating pad so that the gap between the heating pad and the inner coating or the outer coating is sealed with a waterproof sheet, which prevents water from flowing through the gap. 2. The textile product according to claim 1, further comprising a second adhesive tape wrapping the opposite end of the heating pad. 3. The textile product according to claim 2, in which the wire portion contains a section of contacts passing through the end of the heating pad,
curved section, curved at the end of the heating pad,
an elongated portion extending from the curved portion, and
a third adhesive tape wrapping the upper and lower sides of the curved portion. 4. A textile product according to claim 3, in which the third adhesive tape is attached to the inner or outer coating using hot melt adhesive. 5. The textile product according to claim 4, further comprising a fourth adhesive tape for wrapping the upper and lower sides of the elongated portion, the fourth adhesive tape attached to a portion of the elongated portion. 6. The textile product according to claim 5, in which the fourth adhesive tape is attached to the inner coating or the inner surface of the outer coating using hot melt adhesive. 7. The textile product according to claim 6, in which the area containing the heating pad and the fourth adhesive tape covering the elongated area is covered with a waterproof sheet. 8. The textile product according to claim 7, in which hot melt adhesive is located between the waterproof sheet and the first to fourth adhesive tapes. 9. A method of manufacturing a textile product having an outer coating and an inner coating, the method comprising the following steps:
(a) providing at least one heating pad, the wire portion being electrically connected to the end of the heating pad;
(b) positioning the heating pad on the surface of the inner or outer coating;
(c) a treatment is performed by wrapping the adhesive tape at the end of the heating pad at the junction of the wire portion;
(d) wrapping the adhesive tape in a portion of the wire portion that extends outward of the heating pad, and attaching the adhesive tape to the surface of the inner or outer coating with hot melt adhesive; and
(e) attach a waterproof sheet covering the heating pad and the portion of the wire portion to the heating pad by thermocompression welding to protect against water leakage, while
a waterproof sheet is attached along the outer border of the heating pad so that the gap between the heating pad and the inner coating or the outer coating is sealed with a waterproof sheet, which prevents water from flowing through the gap. 10. The method according to p. 9, in which (C) contains the following steps:
(c-1) wrapping the end of the heating pad at the place where it is connected to the wire portion, the first adhesive tape; and
(c-2) wrap the opposite end of the heating pad with a second adhesive tape. 11. The method according to p. 10, in which (d) contains the following steps:
wrapping a curved portion of the wire portion, which is curved at the end of the heating pad, with a third adhesive tape; and
wrapping a portion of the elongated portion of the wire portion extending from the curved portion with a fourth adhesive tape, and
in which the third adhesive tape and the fourth adhesive tape are attached to the surface of the inner or outer coating using hot melt adhesive. 12. The method according to p. 11, in which (d) contains the following steps:
(d-1) affixing hot melt adhesive to the inner or outer coating at a location corresponding to the curved portion, place a third-first adhesive tape between the curved portion and the hot-melt adhesive and attach the third-second adhesive tape to the third-first adhesive tape to wrap the curved portion; and
(d-2) attach the hot melt adhesive to the inner or outer coating in a place corresponding to a portion of the elongated portion, place a fourth-first adhesive tape between the stretched portion and the hot-melt adhesive, and attach the fourth-second adhesive tape to the fourth-first adhesive tape to wrap part of the stretched portion. 13. The method of claim 12, wherein (e) comprises the steps of:
(e-1) attach first to fourth adhesive tapes and a waterproof sheet using hot melt adhesive; and
(e-2) attach the waterproof sheet to the inner or outer coating by thermocompression welding.

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